Microgrid System for a Residential Ensemble

This work focuses on a microgrid supplied by wind and photovoltaic resources, considering the available climate in Romania. The paper aims at developing a management system for a microgrid composed of a hybrid power system and an ensemble of 8 households. The goal is the minimal use of energy from the national distribution network. The hybrid generation system has 8 photovoltaic panels and 4 wind turbines, with maximum power of 37,6 kW. A Matlab/Simulink model of the microgrid was used for simulation of the control system based on decision tables. The decision rules were developed in order to take better advantage of the available resources and to assure a certain independence from the main electrical grid. The tests were done over a one-day interval, using real experimental data. It showed that the energy consumed can be covered from microgrid's own sources for most of the day (80%). Also, the rest of the day, the consumption is partly provided by photovoltaic panels and wind turbines.